Tetrahedron Letters p. 6473 - 6476 (1990)
Update date:2022-09-26
Topics:
Quin, Louis D.
Bourdieu, Catherine
Quin, Gyoengyi S.
2,3-Oxaphosphabicyclo<2.2.2>oct-5-ene-3-oxide derivatives with Et2N- or Mesityl NH groups on phosphorus undergo fragmentation readily when irradiated at -75 deg C in tetrahydrofuran.The solutions give 31P NMR signals at δ +12 and +9, respectively, which are attributed to solvated metaphosphoramidates (RR'N-PO2).These are rapidly converted to phosphoramidates (EtO-P(O)(OH)(NRR') on addition of ethanol.
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